【摘要】 首先简要描述了 Pawlak的 Rough集模型 ,然后 ,提出可变精度 Rough集模型。在定义Rough隶属函数概念的基础上 ,详细论述了可变精度的 Rough集模型和基于决策理论的Rough集模型更多还原

【Abstract】 Pawlak rough set model is briefly described in advance. Afterwards variable precision rough set model is proposed. Based on the notion of Rough membership functions, particularly describes the variable precision rough set model and the rough set model based on decision theory.更多还原